Sodium bisulfite is a reagent that will be potentially used in the experiment. What is it used for?
a. It dilutes unreacted potassium permanganate.
b. It neutralizes unreacted potassium permanganate.
c. It oxidizes unreacted potassium permanganate.
d. It reduces unreacted potassium permanganate.

Flame tests are used to identify the presence of a relatively small number of metal ions in a compound. Not all metal ions give flame colors. For Group 1 compounds, flame tests are usually by far the easiest way of identifying which metal you have got.

Calcium hydroxide reacts with carbon dioxide gives water and calcium carbonate. The balanced equation for the reaction is written as:

\(\rm Ca(OH)_{2} + CO_{2} \rightarrow CaCO_{3} + H_{2}O\)

Calcium carbonate is commonly called limestone. Limestone is mineral deposit found in many living and nonliving things. Rocks and shells of some organisms are major sources of calcium carbonate.

Calcium carbonate can be prepared by passing carbon dioxide through quicklime or calcium oxide CaO. Calcium carbonate will precipitate in a milky solution.

Limestone can also be prepared by the reaction of calcium hydroxide or soda lime with carbon dioxide. Each reacts in one mole and gives one mole of each product as written in the balanced reaction.

To find more on limestone, refer here:

https://brainly.com/question/15148363

#SPJ1

Your question is incomplete. But your complete question probably was:

Calcium hydroxide solution and carbon dioxide gas yields solid calcium carbonate and liquid water. Write the balanced equation for this reaction.

The concentration of Ca(OH)2 in the solution is approximately 1.33 x 10^(-6) M.

To find the concentration of Ca(OH)2 in a solution with a pH of 8.57, we need to use the concept of pOH, which is the negative logarithm of the hydroxide ion concentration ([OH-]). The pOH can be calculated by subtracting the pH from 14, which gives us 14 - 8.57 = 5.43.

Since Ca(OH)2 produces two OH- ions for every molecule of Ca(OH)2 that dissolves, the concentration of OH- ions will be twice the concentration of Ca(OH)2. Thus, we have [OH-] = 2x, where x represents the concentration of Ca(OH)2.

Taking the antilogarithm of the pOH, we find that [OH-] = 10^(-pOH) = 10^(-5.43).

Since [OH-] = 2x, we can write 2x = 10^(-5.43) and solve for x.

x = (10^(-5.43))/2 ≈ 1.33 x 10^(-6) M

For more such questions on Ca(OH)2

https://brainly.com/question/31035177

#SPJ8

The combine mass of the sled and the rider, given that each dog pulled with a force of 30 N is 200 Kg

We know that force is related to mass and acceleration according to the following formula:

Force (F) = mass (m) × acceleration (a)

F = ma

With the above formula, we can determine the combined mass of the sled and rider. Details below.

From the question given above, the following data were obtained:

The combined mass can be obtained as follow:

Force = mass × acceleration

240 = mass × 1.2

Divide both sides by 1.2

Mass = 240 / 1.2

Mass = 200 Kg

Thus, the combine mass is 200 Kg

Learn more about force, mass and acceleration:

https://brainly.com/question/12185838

#SPJ1

Answer:

The plant would be insect-resistant and improve its chances of success.

Explanation:

Answer: Soils are formed through the interaction of five major factors: time, climate, parent material, topography and relief, and organisms.

Soil structure affects plant growth in many, often surprising, ways. The most obvious effects are on root growth, which is strongly inhibited by hard soil, and which in turn influences the ability of the root system to extract adequate water and nutrients from the soil.

Explanation:

https://www.publish.csiro.au/sr/pdf/SR9910717

This is where I gather some info.  

Answer:

the bottom of the inner side is reflecting upwards.

Explanation:

basically, the underside reflects up and the upper side reflects down so it appears to be an upside down reflection :) i hope this helps, have a wonderful day

Baking soda and ice are pure substances, while blueberry muffins and zinc trimix in a scuba tank are mixtures. Vegetable soup, tea with ice and lemon slices, and fruit are heterogeneous mixtures, while seawater and tea are homogeneous mixtures.

a. Baking soda (NaHCO3) - Pure substance (compound). It is a specific chemical compound with a fixed composition, consisting of sodium (Na), hydrogen (H), carbon (C), and oxygen (O) atoms combined in a definite ratio.

b. Blueberry muffin - Mixture. It is a combination of various ingredients, such as flour, sugar, blueberries, butter, eggs, etc. Muffins are not chemically bonded, so it is considered a mixture.

c. Ice (H2O) - Pure substance. It is a specific form of water in the solid state, consisting of hydrogen and oxygen atoms in a fixed ratio.

d. Zinc trimix in a scuba tank - Mixture. It is a combination of three gases: oxygen, nitrogen, and helium. These gases are physically mixed together in the scuba tank and can be separated.

a. Vegetable soup - Heterogeneous mixture. It contains various visible components like vegetables, spices, and broth, which are not uniformly distributed throughout the soup.

b. Seawater - Homogeneous mixture. Although it contains various dissolved substances, such as salts, minerals, and microorganisms, they are uniformly distributed and cannot be visually distinguished.

c. Tea - Homogeneous mixture. It consists of water and dissolved compounds from tea leaves, such as flavors, aromas, and caffeine. These components are uniformly mixed and not easily distinguishable.

d. Tea with ice and lemon slices - Heterogeneous mixture. It contains visible components like tea, ice, and lemon slices that are not evenly distributed throughout the mixture.

e. Fruit - Heterogeneous mixture. Fruits consist of various tissues, such as pulp, seeds, and skin, which are not uniformly distributed and can be visually distinguished within the fruit.

To know more about pure substances, refer to the link :

https://brainly.com/question/24462192#

#SPJ11

The pH of the resulting solution is 2.98. Option B is Correct.

The pH of a solution is a measure of its acidity or basicity, on a scale of 0 to 14. The pH of a solution is calculated by taking the negative logarithm of the hydrogen ion (H+) concentration.

The pH of the resulting solution, we need to know the concentration of H+ ions in the initial solution and in the final solution. We can use the following equation to calculate the pH:

pH = -log[H+]

The initial concentration of H+ ions is 0.010 M, and the final volume of the solution is 100.0 mL. To find the concentration of H+ ions in the final solution, we can use the formula:

[H+] = [solute] * V

here [solute] is the concentration of the HCl and V is the volume of the solution.

The concentration of HCl in the initial solution is not given, but we can assume it is also 0.010 M. Therefore, the concentration of H+ ions in the final solution is:

[H+] = 0.010 M * 100.0 * 2.98 mL

= 2.98 mM

The pH of a solution can be calculated using the following equation:

pH = -log[H+]

pH = -log(2.98 mM)

pH = 2.98

Therefore, the pH of the resulting solution is 2.98. Option B is Correct.

Learn more about solution visit: brainly.com/question/25326161

#SPJ4

Answer:

20L

Explanation:

The following data were obtained from the question:

Initial volume (V1) = 10L

Initial Temperature (T1) = stp = 273K

Final temperature (T2) = 546K

Final volume (V2) =..?

The new volume of the gas can be obtained by using the Charles' law equation as shown below:

V1/T1 = V2/T2

10/273 = V2/546

Cross multiply to express in linear form

273 x V2 = 10 x 546

Divide both side by 273

V2 = (10 x 546) / 273

V2 = 20L

Therefore, the new volume of the gas is 20L.

Answer:

18.782% is the correct percent

Answer:

4.4 × 10^-7

3 × 10^5

Explanation:

scmack me wit dat brainliest

The Gibbs free energy change (ΔG) can be calculated using the formula ΔG° = -RTlnK, the value of ΔG for the reaction at 25°C is approximately -4.83 kJ/mol.

Value of K is 20.2, and the temperature is 25°C or 298 K. Thus, we can calculate the standard Gibbs free energy change (ΔG°) as follows:ΔG° = -RTlnK= -(8.314 J/mol K)(298 K)ln(20.2)= -35,380.2 J/mol≈ -35.4 kJ/mol We can also calculate the Gibbs free energy change (ΔG) at non-standard conditions using the formula ΔG = ΔG° + RTln(Q), where Q is the reaction quotient.

The given reaction is A(g) ⇌ 2B(g), and the value of ΔG° is +5.44 kJ/mol. The reaction quotient Q can be calculated using the partial pressures of A and B as follows: Q = (PA) / (PB)2= (2.50 atm) / (5.70 atm)2≈ 0.15Substituting these values into the formula for ΔG gives:ΔG = ΔG° + RTln(Q)= (+5.44 kJ/mol) + (8.314 J/mol K)(298 K)ln(0.15)= -4,828.2 J/mol≈ -4.83 kJ/mol.

To know more about reaction visit:

https://brainly.com/question/30464598

#SPJ11

Answer:

B. mass and height have the same effect on gravitational potential energy.

Explanation:

Both mass and height have the same effect on the gravitational potential energy of body.

Gravitational potential energy is the energy of a body due to that of another body. It usually the energy at rest in a body.

It is mathematically expressed as;

 G.P.E  = m x g x h

m is the mass

g is the acceleration due to gravity

h is the height

We see that both the height and mass are directly proportional to the gravitational potential energy and as such, they have the same effect.

It is possible to obtain morphine as a hydrochloride salt. Morphine is present in it. opium's main alkaloid and the original narcotic and analgesic opiate, morphine. Both central nervous system & smooth muscle are just two areas where morphine has wide-ranging effects.

a medication for the management of moderate to extreme pain. Certain kinds of coughs may also be treated with it. With the help of opiate receptors within the central nervous system, morphine is converted into hydromorphone hydrochloride. It is both a kind of analgesic and an opioid.

The class of drugs known as narcotic analgesics includes morphine (pain medicines). It alleviates pain by acting just on central nervous system (CNS).

To know more about morphine visit:

https://brainly.com/question/10665765

#SPJ4

2 C4H10 + 13 O2 → 8 CO2 + 10 H2O.

Answer:

d. The acid is likely to eat through the can.

Explanation:

Aluminium is a metallic element found in group 3 of the periodic table. Aluminum is a very reactive metal owing to the fact that it reacts with almost every substance it comes in contact with e.g air, acids, bases etc.

In this question where Derek stores his Hydrochloric acid (HCl) remnant, after an experiment, into a can made of aluminum. What will happen is that the acid is likely going to eat through the can. This might occur gradually but will eventually. Aluminum protects itself from further reactions by forming a layer of Aluminum oxide (Al2O3) when it reacts with air.

This is what keeps the reaction with HCl gradual but the acid will eventually permeate the layer and corrode the aluminum can by reacting with the aluminum.

Climate observations are sourced from numerous meteorological and related observational networks and systems throughout the world.

Many meteorological and associated observational networks and systems exist around the world, and these are the sources of many of the climate observations. Observations of the atmosphere, ocean, and land-based systems must be gathered in order to describe the entire climate system.

Not all observations of the climate are created equal, and some are regarded as being of higher quality than others. As a result, a set of data (Metadata) detailing the circumstances under which a climate observation was made and that will give users information on how the observation should be interpreted and used should be associated with a climate observation, either directly or indirectly. Around the world, there are approximately 11,000 weather stations that measure land, air, and sea temperatures. Satellites, ships, and aircraft are also used to collect data.

Learn more about Climate here:

https://brainly.com/question/7665343

#SPJ4

Answer:

Mass will be equal to 874.56 gram

Explanation:

Molar mass of sulfur = 32 u

Molar mass of Florine = 19 u

Therefore molar mass of \(SF_2\) \(=32+2\times 19=70u\)

So mass of \(6.023\times 10^{23}\) particle is 70 gram

Therefore mass of 1 particle

\(=\frac{70}{6.023\times 10^{23}}=11.62\times 10^{-23}g\)

Therefore mass of \(7.525\times 10^{24}\) particle is

\(7.525\times 10^{24}\times 11.62\times 10^{-23}=874.56gram\)

In this question, we have to use Graham's law of effusion in order to find the molar mass of this unknown gas, the formula is the following:

r1/r2 = √ M2/M1

Where:

r1 = rate of gas 1, in this case oxygen, 625 m/sec

r2 = rate of gas 2, unknown gas, 425 m/sec

M1 = molar mass of gas 1, oxygen, 32g/mol

M2 = molar mass of gas 2, unknown

Adding the values into the formula:

625/425 = √ M2/32

1.47 = √ M2/32

(1.47)^2 = M2/32

2.16 = M2/32

M2 = 32 * 2.16

M2 = 69.12g/mol is the molar mass of this gas

The ratio of octene to oxygen is 1:12.

To determine the ratio of octene (C8H16) to oxygen (O2) in the given reaction, we need to examine the balanced chemical equation. However, the equation you provided does not seem to be balanced. The coefficients for each compound must be determined to achieve a balanced equation before we can calculate the desired ratio.

Assuming you meant the combustion reaction of octene, a balanced equation would be:

C8H16 + 12O2 → 8CO2 + 8H2O

From the balanced equation, we can see that for every 1 mole of octene (C8H16), we require 12 moles of oxygen (O2) to completely react.

This means that for every 1 mole of octene, we need 12 moles of oxygen to fully combust the octene and produce the corresponding amounts of carbon dioxide (CO2) and water (H2O) as shown in the balanced equation.

For such more questions on combustion

https://brainly.com/question/13251946

#SPJ8

If the new solution has a concentration of 0.5 M, then the volume of the solution is 997mL.

Required volume of the new solution will be calculated by using the below equation as:

M₁V₁ = M₂V₂, where

M₁ & V₁ are the molarity and volume of initial HCl solution.

M₂ & V₂ are the molarity and volume of final HCl solution.

On putting values from the question, to the above question we get:

V₂ = (12.1)(41.2) / (0.5) = 997 mL

Hence resultant volume of the final solution is 997 mL.

To know more about concentration & volume, visit the below link:

https://brainly.com/question/7208546

#SPJ1

Answer:

Structurally, plant and animal cells are very similar because they are both Eukaryotic cells. They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, golgi apparatus, Iysosomes and peroxisomes. Plant cells can be larger than animal cells.

Explanation:

I majored in Chemistry

He is not falling nor about to fall which means he’s perfectly balanced. So this means the force in the photo and friction in this photo is in a balanced condition, balancing the boy.

In the given picture, the applied force and the force of friction are balanced. if two forces act in the direction to make the object in a balanced state.

If the forces are in a balanced state it does not change the motion of the object, and if it is in an unbalanced state, it causes to change in the state of the motion.

Therefore, the force of friction and the gravitational force are balanced is the correct option.

Learn more about forces, here:

https://brainly.com/question/28458730

#SPJ1

The given question is incomplete, so the complete question image is attached in the image below.

The type of energy is given as under :

The sun transfers energy to the earth in the form of electromagnetic waves and the warm up the earth's upper air.

Some of the radiation that enters the earth get absorbed by the land surface. The sun is ths responcible for the energy distribution.

The visible light is part of wavelength that carries colors the human eyes can see. The infrared is the range that transfers the heat from the sun.

Find out more information about the Earth.

brainly.com/question/25624188

The number of moles of NaCl contained in 5 L of a 2.2 M solution is 11 moles

The molarity of a solution gives a relationship between volume and mole of substance. The mathematical relationship is given below:

Molarity = number of mole / Volume

With the above formula, we can determine the number of mole of NaCl in the solution. Details below:

Molarity = number of mole / Volume

Cross multiply

Number of mole = molarity × volume

Number of mole of NaCl = 2.2 × 5

Number of mole of NaCl = 11 moles

Thus, the number of moles of NaCl is 11 moles

Learn more about number of mole:

https://brainly.com/question/20522500

#SPJ1